Extra-deep drive.Ideal application: Local - P&D Service, Long Haul, Regional Haul.Designed to incorporate a deep, aggressive tread for drive axle traction in on-highway, line haul service.Proven, dependable lug design for solid traction and long tread life.Tie bars on shoulder lugs provide a firm grip together with uniform wear.Four full steel belts and an all-steel casing ply for durability and excellent retread performance.